122345520 has 160 divisors (see below), whose sum is σ = 418258944. Its totient is φ = 29582080.

The previous prime is 122345507. The next prime is 122345537. The reversal of 122345520 is 25543221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 319249 + ... + 319631.

Almost surely, 2^122345520 is an apocalyptic number.

122345520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122345520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209129472).

122345520 is an abundant number, since it is smaller than the sum of its proper divisors (295913424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122345520 is a wasteful number, since it uses less digits than its factorization.

122345520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 122345520 is about 11060.9909140185. The cubic root of 122345520 is about 496.4353401272.

Adding to 122345520 its reverse (25543221), we get a palindrome (147888741).

The spelling of 122345520 in words is "one hundred twenty-two million, three hundred forty-five thousand, five hundred twenty".